For a 99% confidence interval of the population mean based on a sample of n = 25 with s = 0.05,the critical value of t is:
A)2.7969
B)2.7874
C)2.4922
D)2.4851

Question

Quizplus · Accepted Answer

To find the critical value of t for a 99% confidence interval with 25 degrees of freedom (n-1), we need to use a t-distribution table or calculator. Using a table or calculator, we find that the critical value for a two-tailed test with alpha = 0.01 and 25 degrees of freedom is approximately 2.7969. Thus, the best choice is A).

For a 99% Confidence Interval of the Population Mean Based